1318641 has 8 divisors (see below), whose sum is σ = 1772544. Its totient is φ = 871920.

The previous prime is 1318633. The next prime is 1318661. The reversal of 1318641 is 1468131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1318641 - 2³ = 1318633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1318661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350 + ... + 2111.

It is an arithmetic number, because the mean of its divisors is an integer number (221568).

2^1318641 is an apocalyptic number.

It is an amenable number.

1318641 is a deficient number, since it is larger than the sum of its proper divisors (453903).

1318641 is a wasteful number, since it uses less digits than its factorization.

1318641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591.

The product of its digits is 576, while the sum is 24.

The square root of 1318641 is about 1148.3209481674. The cubic root of 1318641 is about 109.6584724042.

The spelling of 1318641 in words is "one million, three hundred eighteen thousand, six hundred forty-one".